Edwaed newell case



(No Model.)

E. N. CASE.

ALARM PADLOOK. Ne; 589,930. Patented Sept. 14,1897.

' llNiTE TA'FBES 7 n'rnnr FFICE.

EDlVA-RD NEXVELL CASE, OF CHICAGO, ILLINOIS.

jALARiVl-PADLOCK.

SPECIFICATION forming part of Letters Patent No. 589,930, datedSeptember 14, 1897. Application filed August 10, 1896. Serial No,602,345. (No model.)

To aZZ whom it may concern:

Be it known that I, EDWARD NEWELL CASE, a citizen of the United States,residing at Chicago, in the county of Oook and State of Illinois, haveinvented a new and useful EX- plosive Alarm-Padloclcfor Bicycles, Doors,and other Objects, of which the following is a specification.

My invention relates to an explosive alarm attachment to the padlock inwhich the mechanism (lever, springs, the.) is arranged to operate upona'firing-pin which comes in contact with an explosive cap or cartridge,thereby causing an alarm.

The object of my invention is to provide a locking apparatus which, iftampered wit-h directly or indirectly while attached to a bicycle, door,or other object, will produce an. alarm. I attain this object bymechanism illustrated in the accompanying drawings, in which- Figure 1is a sectional elevation of the e11- tire lock locked. Fig. 2 is aplan'showin g the bow swung to one side ready to be attached and locked.Fig. 3 is a plan of the firing device. firing device. Fig. 5is a sectionof the barrel, same as in Fig. 1, with the firing device and cartridgeremoved. Fig. 6 is a projection of the look as attached to abicycle-sprocket. Fig. 7 is a side view of arm a, Fig. 1, showing slotdown the side. Fig. 8 is a side view of the key.

Similarletters refer to similar parts throughout the several views.

In the plate S, which constitutes the lockcasing, is the keyhole a Fig.6, in which turns the arm a, said arm a having a slot down one side intowhich the key is inserted.

.In the upper part of plate S (which is the lock-casing) projects thebow A, to which is attached the pawl iand spring 0, that produces anoutward movement to pawl 2'.

In the cylinder j is the plunger (2, which has a tendency to force thebow A from its position in Fig. 1 through the action of the spring d,the object of whichis to produce automatic action to bow A whileunlocking.

Z) Z) are tumblers of different form containing the slots 0 which onturning the key coincide, allowing the projection i on the arm a,

Fig. a is a sectional elevation of the Fig.7, to pass in, and therebyallowing arm a to turn against pawl 'i, thereby releasing said pawl z'from double lever n while unlocking. To insert a cartridge, the firingdevice O must be detached from the barrel F, leaving the barrel clearfor its insertion to the chamber 6 Fig. 5.

. n and 0 are double levers for transmitting force from the pawl c'tothe trigger m.

To insert the firing device, the projection Z, Figs. 8 and 4, must beplaced so as to pass through the slot 0, Fig. 5, when it is free to turninto the position shown in Fig. 1, the slot 0 enlarging to 19, Fig. 5.During the insertion of the firing device the trigger an will catch uponthe edge if, drawing in the firing pin and compress the spring 25, Fig.4, as in Fig. 1. Itwill be seen that if force is applied to eject thebow A from its position-in Fig. 1 its action will be transmitted to thetrigger m through the medium of the pawl i and double levers n and 0,causing the trigger an to slip 0% the edge n leaving the compressedspring free to act upon the firing-pin, thence upon the cartridge Jh,causing concussion.

r, Fig. 1, is a bearing through which the bow A passes.

s is a pin which limits the motion of pawl 'i and double lever 41.

it, Fig. 2, is the muzzle of the barrel F.

Q Figs. 1, 3, and 4-, is a socket for bow A to prevent the firing device0, Figs. 1, 3, and 4, from turning when locked.

Q is a passage into which the end of bow A passes when looking.

Z is a pin which acts .as a stop to prevent bowAturning farther than isshown in Fig. 2.

7a is a stop that limits the longitudinal travel of bow A.

' fis a pin for keeping the springs V V in position.

V V are springs for holding the tumblers b b against the key.

The tumblers b b are common, but are suitable for a purpose set forth,and to which I attach no claim.

What I do claim as my invention, and desire to secure by Letters Patent,is

1. In an explosive alarm-padlock the bow A having attached pawl z andspring 0 in combination with double levers n and 0, all arranged andoperating to force trigger m from p and bow A all arranged to hold andlock edge of barrel F provided with the edge 11 said firing device 0topadlook, substantially 10 thereby releasing spring 6, all. operatingwhen as described tension is brought upon said boWA substan- 1 I 5tially as set forth. NEWELL CASE 2. In an exp1osive alarnrpadlock thefiring Vitnesses: device (J having projection Z and socket Q in J. S.JOHNSON,

combination with barrel F having slots 0 and \V. II. COTTON.

